The Rialto was originally called the Colonia and opened before WW1.
I was relief projectionist there starting in 1966, The main guy was Leo Buskey who was the last living charter member of local 337 IATSE.
The Rialto closed in late 1967. It was bought by Panther Theatres, the successor to Schine. They completely remodeled it, renamed it the Forum and reopened in January 1968 with “Guess who’s Coming to Dinner”.
The Forum ended as a porn house and closed in the mid 1970’s.

Sorry but this photo is not of the Forum in Utica, NY. It is actually the Forum Theater on 47th Street and Broadway in New York City. In the background you can see the old Strand Theatre (converted to a twin and renamed The Penthouse and The Cinerama).